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  1. Prepare
  2. Java
  3. Strings
  4. Valid Username Regular Expression
  5. Leaderboard

Valid Username Regular Expression

Hacker
Rank
Score
kalpesh141408003
158106
flag of India
00.00
jaydeepmohite
158106
flag of India
00.00
Krazoid
158106
flag of United States
00.00
akmal
158106
flag of United States
00.00
dany_rakotopara
158106
flag of France
00.00
mithundgp
158106
flag of India
00.00
rohan_s
158106
flag of United States
00.00
cecifernandes
158106
flag of Brazil
00.00
akumar09071988
158106
flag of United States
00.00
rbihemu
158106
flag of India
00.00
laid_to_rest
158106
flag of India
00.00
bil_070
158106
flag of Pakistan
00.00
dotaboy
158106
flag of Philippines
00.00
adit_nitd
158106
flag of India
00.00
hawvva
158106
flag of India
00.00
Piyush2512
158106
flag of India
00.00
sindhushat
158106
flag of India
00.00
ashu_dwy
158106
flag of India
00.00
shah_parshva96
158106
flag of India
00.00
l3ond
158106
flag of Moldova, Republic of
00.00
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